The YHM Resonator R2 is Yankee Hill Machine’s quiet, lightweight and cost-effective full-length .30 caliber suppressor (brand part no. YHM-2130-MB-24). It handles rifle calibers from .17 HMR through 300 RUM, so one can can move between a .223, a .308 and a magnum hunting rifle. The tubeless design pairs 17-4 stainless steel with a Cobalt 6 blast baffle, and the blast chamber threads to the 1-3/8×24 HUB pattern. It ships with a Phantom Q.D. adapter, a 5/8×24 Phantom muzzle brake and two suppressor wrenches. It is a strong value for a hunter or range shooter who wants one full-auto-rated rifle can with extra length for suppression.

Key Specifications

• The bore is sized for .30 caliber, and YHM rates it for rifle calibers from .17 HMR through 300 RUM.
• Weight is 13 ounces, or 16 ounces with the Q.D. adapter.
• Overall length is 6.95 inches, or 7.825 inches with the Q.D. adapter, a length that favors suppression.
• Body diameter is 1.5625 inches, which sets the clearance needed around the handguard.
• The design is tubeless 17-4 stainless steel, simple and durable.
• A Cobalt 6 blast baffle sits where heat and pressure are highest.
• The mount is a 5/8×24 Phantom Q.D. muzzle brake with a HUB adapter, both supplied.
• The blast chamber threads to the 1-3/8×24 HUB standard for other mounting options.
• YHM publishes a sound rating of 135 dB for the R2.
• It is full-auto rated, built for rigorous use.

Frequently Asked Questions

What ships with the Resonator R2? A Phantom Q.D. adapter, a 5/8×24 Phantom Q.D. muzzle brake and two suppressor wrenches.

Do I need ATF approval to buy this? No. As of October 9, 2026, ATF no longer requires Form 4 approval, registration or a tax stamp for suppressors. It transfers on a Form 4473 with a background check through a Class 3 (SOT) dealer. State and local laws still apply.

What are the minimum barrel lengths? YHM lists 10.5 inches for 7.62×51 and .308 Winchester, 10 inches for 5.56 NATO, 6.8 SPC and 7.62×39, 7.5 inches for 300 Blackout, and 20 inches for .300 Win Mag and 300 RUM.

Buy the Yankee Hill Machine Resonator R2 .30 Caliber Suppressor with 5/8×24 Phantom Q.D. Brake

As of October 9, 2026, this suppressor transfers on a Form 4473 with a background check at your Class 3 (SOT) dealer, with no Form 4 or tax stamp; state and local laws still apply. Order through Yankee Hill Machine‘s silencers and suppressed firearms lineup and our Lubbock, Texas team will handle the transfer and it ships fast to your Class 3 dealer.